Malicious PDF — malware analysis report

Static analysis result for SHA-256 30bf508f370162be…

MALICIOUS

PDF

35.8 KB Created: 2020-09-20 01:05:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 11053fa44ec12a21711fd023a98486cf SHA-1: 6e31faeceb6dfd4cf4d6d4477df49403e43c3632 SHA-256: 30bf508f370162be71e97403ac4bfdca596f0325c057138136a3c1335aa1e370
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a prominent link that redirects to a malicious URL, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text and URLs that suggest a lure for downloading content. The PDF_SEO_LINK_FARM heuristic indicates a large number of outbound links, many of which are likely part of a link farm designed to improve search engine ranking for malicious content. The SE_DOWNLOAD_BUTTON heuristic further supports the idea of a deceptive download lure.

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.club/wix?keyword=foundations+for+superior+performance+percussion+pdf
    • http://dulikona.chironschorus.com/uploads/1/3/1/6/131636755/09d9c.pdf
    • https://f8305235-4175-4ed9-b2f4-a877557815f8.filesusr.com/ugd/04e6f9_41be515ff1d845429d550608de7439f7.pdf?index=true
    • https://73c2557f-98b3-436d-8a7d-8b40a7cede91.filesusr.com/ugd/db1da1_f65cd4034e8944ce808f78238c09ef67.pdf?index=true
    • https://72f1f5a2-c7a8-41bc-92ea-ea4a168841fa.filesusr.com/ugd/c450b2_9782860d74eb441b830dde705f37ff17.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0434/4204/5090/files/oxford_dictionaries_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/3386/1018/files/math_machine_learning.pdf
    • https://cdn.shopify.com/s/files/1/0429/2149/2643/files/jebizixamuxopokizawolejog.pdf
    • https://cdn.shopify.com/s/files/1/0436/4868/0089/files/banalit_du_mal_arendt.pdf
    • https://cdn.shopify.com/s/files/1/0435/0256/7588/files/descriptivo_correlacional.pdf
    • https://cdn.shopify.com/s/files/1/0459/9824/3999/files/jujejaluvita.pdf
    • https://cdn.shopify.com/s/files/1/0427/8134/3903/files/zafovavumotipesovazu.pdf
    • https://cdn.shopify.com/s/files/1/0432/8567/6188/files/87901222173.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004ef8.bin
d6e86d46ab6d38e58c70da7453a4972bb5182c8edb19d426fb8b36332430f921
pdf-font-stream PDF embedded font (sfnt) at offset 0x4EF8 5224 bytes
font_01_sfnt_off000060af.bin
1566eec206db5d03a833577ed2c19c6623d2dc7b258f995791bcda9191b11bcc
pdf-font-stream PDF embedded font (sfnt) at offset 0x60AF 9956 bytes